diff --git a/mopidy/scanner.py b/mopidy/scanner.py
index 041f6fc4..4b057774 100644
--- a/mopidy/scanner.py
+++ b/mopidy/scanner.py
@@ -152,12 +152,9 @@ class Scanner(object):
         self.fakesink.set_property('signal-handoffs', True)
         self.fakesink.connect('handoff', self.process_handoff)
 
-        uribin_caps = gst.Caps()
-        uribin_caps.append_structure(gst.structure_from_string(b'audio/x-raw-int'))
-        uribin_caps.append_structure(gst.structure_from_string(b'audio/x-raw-float'))
-
         self.uribin = gst.element_factory_make('uridecodebin')
-        self.uribin.set_property('caps', uribin_caps)
+        self.uribin.set_property('caps',
+            gst.Caps(b'audio/x-raw-int; audio/x-raw-float'))
         self.uribin.connect('pad-added', self.process_new_pad)
 
         self.pipe = gst.element_factory_make('pipeline')